评估饲喂不同水平的无刺仙人掌（0，33，66和100%）替代麦麸的36只F1代初始平均体重19.5 ± 0.27kg的圣伊内斯×杜泊公羔育肥羔羊的摄入量、营养物质消化率、摄食行为、性能和胴体性状。替代日粮对干物质（干物质）或粗蛋白（粗蛋白）的摄入量没有影响，其平均值分别为962和140g/天。

对可消化有机物的摄入（OM）、DM和CP的消化率，中性洗涤纤维（NDF）和非纤维碳水化合物（NFC）具有二次效应。最高168克/天的平均日增重（ADG）是在58.7%的替代水平达到的。最热和最冷时15.4kg和14.5kg的胴体重量分别是在62.4%和56.9%的替代水平实现的。对于育肥羔羊，研究人员推荐无刺仙人掌代替麦麸的水平为58.7%。

原文摘要如下：

Intake, performance, and carcass characteristics of lambs fed spineless cactus replacing wheat bran.

Felix SC¹, Pessoa RA¹, Ferreira Mde A¹, Soares LF¹, Silva Jde L², de Abreu KS¹, de Melo AC¹

Abstract：To assess the intake, digestibility of nutrients, ingestive behavior, performance, and carcass characteristics of feedlot lambs, 36 F1 Santa Ines×Dorper male lambs with an initial average weight of 19.5±0.27kg were fed with different levels of spineless cactus (0, 33, 66, and 100%) as a replacement of the wheat bran. The replacement diets had no effect on the intake of dry matter (DM) or crude protein (CP), whose average values were 962 and 140g/day, respectively. There was a quadratic effect on the intake of digestible organic matter (OM) and the digestibility of DM, CP, neutral detergent fiber (NDF), and non-fiber carbohydrates (NFC). The highest average daily gain (ADG) of 168g/day was achieved at 58.7% replacement level. The highest hot and cold carcass weights of 15.4 and 14.5 kg were achieved at 62.4 and 56.9% replacement levels. For lambs in the feedlot, we recommend replacing wheat bran with up to 58.7% spineless cactus.

Keywords: Alternative feed， Carcass yield， Dry matter intake， Spineless cactus， Weight gain

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